[sunshineband]

It is several years since I used bubble wrap to insulate my greenhouse.

Can you help with these questions please?

1. Large bubbles or small bubbles?

2. Do I need to cover the walls completely?

Any help will be appreciated. Thank you 

[Kleftiwallah]

Small or large bubbles, I don't think it matters.  Hint, bookies pencils are just the right size to trap the bubble wrap in the verticle grooves of most ally greenhouses.

Cheers,   Tony.

[DD.]

Something like this is cheap enough and easy to (re)use.

Bubblewrap clips

[sunshineband]

Something like this is cheap enough and easy to (re)use.

Bubblewrap clips

Thank you for the link , DD 

This is what I have only with longer -legs, so the wrap is held further away from the glass. As I have grape vine along the roof bars, this does help a bit.

I like your idea Kleftiwallah, but the bar gaps on our are very narrow 

Have visions of all the pencils flying out as I catch my foot in a trailing piece and it all taughtens throughout the greenhouse    I am sure that would  not happen to you of course 

 and covering the walls? Essential or not?